An unfurnished room within a building used for hand washing, bathing, laundry, dish washing, etc
A lavatory; a room designed and equiped for washing hands, normally fitted with basins or sinks, drains, and running water available from taps or faucets
A specially designed chamber in a laboratory or industrial plant designed for emergency bathing such as may be needed for human exposure to harmful chemicals and the like
A similarly equipped room in an institution, such as a hospital or school or manufactory, designated for washing hands, bathing, laundering, or a combination of such
A washroom is a room with toilets and washing facilities, situated in a large building such as a factory or an office block. a room in a public building where you can wash and use the toilet
[ 'wosh, 'wäsh, chiefly ] (verb.) before 12th century. Middle English, from Old English wascan; akin to Old High German waskan to wash and perhaps to Old English wæter water.